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(parent: 7f80850) | patch
perf/x86: Fix PEBS instruction unwind
authorPeter Zijlstra <a.p.zijlstra@chello.nl>
Fri, 7 Oct 2011 11:36:40 +0000 (13:36 +0200)
committerIngo Molnar <mingo@elte.hu>
Mon, 14 Nov 2011 12:01:20 +0000 (13:01 +0100)
commit57d1c0c03c6b48b2b96870d831b9ce6b917f53ac
tree80039cd44137c39e4ab400e642ee3751cb870f50tree | snapshot
parent7f80850d3f9fd8fda23a317044aef3a6bafab06bcommit | diff
perf/x86: Fix PEBS instruction unwind

Masami spotted that we always try to decode the instruction stream as
64bit instructions when running a 64bit kernel, this doesn't work for
ia32-compat proglets.

Use TIF_IA32 to detect if we need to use the 32bit instruction
decoder.

Reported-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: stable@kernel.org
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/cpu/perf_event_intel_ds.c diff | blob | history
Domain: System / Kernel;